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GHSA-jq6g-4v5m-wm9r BIT-typo3-2023-38499 CVE-2023-38499

Information Disclosure due to Out-of-scope Site Resolution

Medium Packagist
Severity
3.7 / 10
Medium · CVSS 3.1
Exploit chance (EPSS)
1.07%
Chance of exploitation in the next 30 days. Higher than 64.83% of scored vulnerabilities.
Known exploited
No
Not in CISA's catalog
Weakness
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
Fix
9.5.42
Upgrade typo3/cms-core to this version or later

Description

CVSS: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:F/RL:O/RC:C (3.5)

Problem

In multi-site scenarios, enumerating the HTTP query parameters id and L allowed out-of-scope access to rendered content in the website frontend. For instance, this allowed visitors to access content of an internal site by adding handcrafted query parameters to the URL of a site that was publicly available.

Solution

Update to TYPO3 versions 9.5.42 ELTS, 10.4.39 ELTS, 11.5.30, 12.4.4 that fix the problem described above.

ℹ️ Strong security defaults - Manual actions required Resolving sites by the id and L HTTP query parameters is now denied per default. However, it is still allowed to resolve a particular page by e.g. https://example.org/?id=123&L=0 - as long as the page-id 123 is in the scope of the site configured for the base-url example.org. The new feature flag security.frontend.allowInsecureSiteResolutionByQueryParameters - which is disabled per default - can be used to reactivate the previous behavior.

Credits

Thanks to Garvin Hicking who reported this issue, and to TYPO3 core & security team members Oliver Hader and Benjamin Franzke who fixed the issue.

References

Affected versions

Packagist

PackageVulnerableFixed in
typo3/cms-core
>= 9.4.0, < 9.5.42
9.5.42
typo3/cms-core
>= 10.0.0, < 10.4.39
10.4.39
typo3/cms-core
>= 11.0.0, < 11.5.30
11.5.30
typo3/cms-core
>= 12.0.0, < 12.4.4
12.4.4

How to fix

Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.

typo3/cms-core Packagist → 9.5.42

composer
composer require typo3/cms-core:^9.5.42

Severity breakdown

CVSS 3.1 3.7

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

Weakness

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

How to prevent it
  • Architecture and Design: Compartmentalize the system to have "safe" areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area. Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.

References

Advisories

Packages

Other links

Timeline

  1. Published
  2. Last updated by the source
  3. Latest EPSS score
AdvisorySeverityWhy it's related
GHSA-68jx-f42c-7599
TYPO3 CMS - Broken Access Control in Backend and Install Tool
High Also affects typo3/cms-core
GHSA-chm7-4vch-h8vr
TYPO3 CMS has Broken Access Control in its Media Module
High Also affects typo3/cms-core
GHSA-jh32-v29g-68pq
TYPO3 CMS has Privilege Escalation & SQL Injection in its Form Framework
High Also affects typo3/cms-core
GHSA-c78m-c52x-jgwp
TYPO3 CMS has Insecure Deserialization via Core API
Medium Also affects typo3/cms-core
GHSA-jf56-v8jc-jcc5
TYPO3 CMS has Broken Access Control in its File Abstraction Layer
Low Also affects typo3/cms-core
GHSA-2j54-93q2-3hjq
TYPO3 CMS has Broken Access Control in Backend API
Medium Also affects typo3/cms-core
GHSA-q93m-25xv-94hh
TYPO3 CMS: Broken Access Control in Media Module
Medium Also affects typo3/cms-core
GHSA-qcmw-6rm2-5x78
TYPO3 CMS has Broken Access Control in its DataHandler
Medium Also affects typo3/cms-core
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